How to Turn the Check Engine Light off on a 2003 Toyota
- 1). Park the vehicle on a level surface and set the parking brake.
- 2). Disconnect the ground (black) cable from the negative battery terminal by loosening the retaining bolt and sliding the ground cable off the negative battery post.
- 3). Wait at least 10 minutes.
- 4). Reconnect the ground cable to the negative battery terminal.
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